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Finding the Fourth Proportional to 395,338.53, 545,568.45 and 214,052.43

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Solution

The fourth proportional to 395,338.53, 545,568.45 and 214,052.43 is: 295,393.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,338.53 : 545,568.45 = 214,052.43 : x
  2. Step 2: Convert to fraction form
    395,338.53/545,568.45 = 214,052.43/x
  3. Step 3: Cross multiply
    395,338.53x = 545,568.45 × 214,052.43
  4. Step 4: Simplify right side
    395,338.53x = 116,780,252,453.83
  5. Step 5: Solve for x
    x = 116,780,252,453.83/395,338.53
  6. Step 6: Final answer
    x = 295,393.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.